| US 7,604,687 B2 | ||
| Gas filtration media | ||
| Eric H. Miller, Philpot, Ky. (US); Joseph G. Yaritz, Utica, Ky. (US); Karl Froelich, Charlotte, N.C. (US); and Mark T. Demeuse, Charlotte, N.C. (US) | ||
| Assigned to Daramic LLC, Charlotte, N.C. (US) | ||
| Filed on Jun. 01, 2006, as Appl. No. 11/445,357. | ||
| Claims priority of provisional application 60/687620, filed on Jun. 03, 2005. | ||
| Prior Publication US 2006/0272499 A1, Dec. 07, 2006 | ||
| Int. Cl. B01D 46/00 (2006.01); B01D 39/16 (2006.01); B01D 39/20 (2006.01) | ||
| U.S. Cl. 95—273 [95/285; 55/522; 55/523; 55/524; 55/528; 210/650; 210/503; 210/510.1] | 19 Claims |
| 1. A method of filtering particulates from a gas comprising the step of:
providing a filtration media comprising a microporous membrane, the membrane including an ultra high molecular weight polyethylene,
an inorganic material, wherein the ration of inorganic material to polymer being in the range of 4:1 to 1:4, and a processing
oil being no more than 30% by weight of said membrane.
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